Transcription of Chapter 5: Normal Probability Distributions - Solutions
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Chapter 5: Normal Probability Distributions - Solutions Note: All areas and z-scores are approximate. Your answers may vary slightly. Normal Distributions : Finding Probabilities If you are given that a random variable X has a Normal distribution , finding probabilities corresponds to finding the area between the standard Normal curve and the x-axis, using the table of z-scores. The mean (expected value) and standard deviation should be given in the problem. For the Probability that X < b, convert b into a z- score using b . z=.. and use the table to find the area to the left of the z-value. For the Probability that X > a, convert a into a z- score using a . z=.. and use the table to find the area to the right of the z- score .
Chapter 5: Normal Probability Distributions - Solutions Note: All areas and z-scores are approximate. Your answers may vary slightly. 5.2 Normal Distributions: Finding Probabilities
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